Add utility classes (Slice, Fd, Status, etc)
Test: as follows
- built
- flashed
- bootedt log
- netdutils_test passes
- unsubmitted NFLogListenerTest passes
Bug: 28806131
Change-Id: I17846a0dee1edca55df10e5464e607109d978cb5
diff --git a/libnetdutils/Slice.cpp b/libnetdutils/Slice.cpp
new file mode 100644
index 0000000..7a07d47
--- /dev/null
+++ b/libnetdutils/Slice.cpp
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sstream>
+
+#include "netdutils/Slice.h"
+
+namespace android {
+namespace netdutils {
+namespace {
+
+// Convert one byte to a two character hexadecimal string
+const std::string toHex(uint8_t byte) {
+ const std::array<char, 16> kLookup = {
+ {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}};
+ return {kLookup[byte >> 4], kLookup[byte & 0xf]};
+}
+
+} // namespace
+
+std::string toString(const Slice s) {
+ return std::string(reinterpret_cast<char*>(s.base()), s.size());
+}
+
+std::string toHex(const Slice s, int wrap) {
+ Slice tail = s;
+ int count = 0;
+ std::stringstream ss;
+ while (!tail.empty()) {
+ uint8_t byte = 0;
+ extract(tail, byte);
+ ss << toHex(byte);
+ if ((++count % wrap) == 0) {
+ ss << "\n";
+ }
+ tail = drop(tail, 1);
+ }
+ return ss.str();
+}
+
+std::ostream& operator<<(std::ostream& os, const Slice& slice) {
+ return os << std::hex << "Slice[base: " << reinterpret_cast<void*>(slice.base())
+ << ", limit: " << reinterpret_cast<void*>(slice.limit()) << ", size: 0x"
+ << slice.size() << "]" << std::dec;
+}
+
+} // namespace netdutils
+} // namespace android